.in-header
  background url('../image/us-bg.png') no-repeat center
  background-size cover
.container
  margin 0 auto
  >.introduce
    padding 0 30px
    >.title
      margin-top 60px
      text-align center
      font-size 36px
      margin-bottom 30px
    >.content
      font-size 28px
      line-height 44px
      font-weight lighter
  >.work-evrmt
    margin-top 45px
    >.img
      margin-top 25px
  >.work-place
    margin-top 50px
    >.img
      margin-top 30px
      margin-bottom 50px








  